Patents by Inventor Katherine Heyworth

Katherine Heyworth has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Seat cushion
    Patent number: D508183
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: August 9, 2005
    Assignee: Three Hockey Moms
    Inventors: Sue Lambden, Tanja Ducharme, Katherine Heyworth